Uranium-235 Fission

235U + 1n → 141Ba + 92Kr + 31n

概述

A uranium-235 nucleus absorbs a slow neutron and splits into barium-141 and krypton-92, releasing three neutrons and approximately 200 MeV of energy. This is one of many possible fission product combinations. The three released neutrons can trigger further fissions, creating a chain reaction. One kg of U-235 releases energy equivalent to 20,000 tonnes of TNT.

参与者

角色 物质 系数 状态
反应物 Uranium U 1 (s)
产物 Barium Ba 1 (s)
产物 Krypton Kr 1 (g)

日常示例

Nuclear power plants use controlled U-235 fission to generate about 10% of the world's electricity without direct CO₂ emissions.

工业重要性

核裂变每年从全球440座反应堆产生约2700 TWh电力，为电网提供稳定的基荷电源。

属性

类型
Nuclear
可逆
否
能量
放热
ΔH
-19200000000.0 kJ/mol

相关反应

Alpha Decay of Radium-226 Alpha Decay of Radon-222 Alpha Decay of Thorium-232 Neutron Capture by Uranium-238 Beta Decay of Iodine-131 Beta Decay of Strontium-90 Alpha Decay of Polonium-210 Americium-241 Alpha Decay Beta Decay of Cobalt-60 Electron Capture by Beryllium-7

Frequently Asked Questions

What is the equation for Uranium-235 Fission?
The balanced equation is: ²³⁵U + ¹n → ¹⁴¹Ba + ⁹²Kr + 3¹n.
What type of reaction is Uranium-235 Fission?
Uranium-235 Fission is a nuclear reaction.
Is Uranium-235 Fission exothermic or endothermic?
Uranium-235 Fission is exothermic (releases energy). The enthalpy change (ΔH) is -19200000000.0 kJ/mol.